AIS Server (Part2)
So far we have discussed about API, SOAP and REST. Let's continue with JSON.
What is JSON?
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JSON (java script object notation) is a lightweight data format for data exchange or transfer. The JSON format is syntactically identical to the code for creating JavaScript objects.
Because of this similarity, a JavaScript program can easily convert JSON data into native JavaScript objects. JSON is easy to integrate in JavaScript applications, but XML isn't.
This makes JSON a preferred data format with many mobile application developers.
In the 'old' days, web services used XML as their primary data format for transmitting back data, but since JSON appeared , it has been the preferred format because it is much more lightweight.
The two primary parts that make up JSON are keys and values. Together they make a key/value pair.
Key: A key is always a string enclosed in quotation marks.
Value: A value can be a string, number, boolean expression, array, or object.
Key/Value Pair: A key value pair follows a specific syntax, with the key followed by a colon followed by the value. Key/value pairs are comma separated.
Example for key,value pair-> "Country" : "Japan"
This example is a key/value pair. The key is "Country" and the value is "Japan".
JSON example:
The { (curly brace) represents the JSON object.
{
"employee": {
"name": "sonoo",
"salary": 56000,
"married": true
}
}
In the above example, employee is an object in which "name", "salary" and "married" are the keys. In this example, there are string, number and boolean values for the keys.
The string value must be enclosed within double quote.
With this basic information, let us move to AIS server. You can search in google to learn more about JSON and REST API.
Application Interface Services (AIS) Server:
AIS for Mobile provides the communication interface between JD Edwards EnterpriseOne mobile enterprise applications and JD Edwards EnterpriseOne. AIS server also used for ADF customizations, and IOT(Internet of Things).
AIS Server is a REST services server that when configured with the EnterpriseOne HTML Server, enables access to EnterpriseOne forms and data. All communication with the AIS Server is in the form of JSON formatted strings.
Use a REST service testing tool to call AIS services directly by sending JSON text to the URL for the service. All services are accessed using URLs with this format: http://<aisserver>:port/jderest/<uri>, where uri is the path to the various types of services such as formservice, file, defaultconfig, and poservice.
The AIS Server exposes endpoints that:
Enable access to EnterpriseOne data and applications.
Produce JSON responses.
Each endpoint provides a particular service that AIS clients can use to interact with EnterpriseOne applications.
High Level Operation of AIS:
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As you can see in the left hand side of the above image the Client/End application can be one of the below options:
Oracle Mobile Application Framework (MAF)
EnterpriseOne ADF
Java API
IoT devices
EnterpriseOne mobile enterprise applications – These are mobile applications developed with Oracle's MAF. These applications use Java, HTML5 and JavaScript to construct an inclusive framework with effective user interface definition and strong built-in security features.
EnterpriseOne ADF - Oracle ADF is an integrated application development framework built using , java, JSF. The framework comes with JDeveloper IDE. You can build enterprise applications using this framework.
ADF is capable of executing web applications within its framework. With Oracle ADF, you can create Oracle ADF web applications for JD Edwards EnterpriseOne (also referred to as EnterpriseOne ADF applications) that interact with standard or customized EnterpriseOne applications. Oracle ADF enables you to retrieve data from custom EnterpriseOne applications by using existing business logic within your EnterpriseOne applications.
JAVA API- With the Application Interface Services (AIS) Client Java API, you can use any development tool that works with Java APIs to create custom applications that interact with EnterpriseOne. Whether you need a simplified kiosk application for your warehouse, an application that composites features from multiple EnterpriseOne applications into a single purpose-built interface, or an application for the latest wearable device, the AIS Client Java API enables you to choose the development platform that fits your needs
IOT Devices - Provides instruction and security for transferring third party data from third-party IoT devices/systems.
In the above image, we see AIS server is communicating with the HTML server. Oracle recommends to set up an additional HTML Server instance for processing AIS Server requests only. This is recommended so that the performance of the EnterpriseOne HTML Server used by EnterpriseOne web client users is not impacted by AIS Server requests.
AIS server acts as a mediator between Mobile applications and JDE HTML server.
Installation Steps(High Level):
- Install JDK and Weblogic as per MTRs
- Install SMAgent
- Register the Weblogic server in SMC
- Created AIS J2EE container
- Download the AIS file
- Distribute the AIS file
- Create AIS instance.
- Make the necessary configuration changes
- Start the AIS server
- Test it using "http://server:port/jderest/defaultconfig - This uses the Defaultconfig service on the AIS Server to test communication between the AIS Server and the EnterpriseOne HTML Server.
Note: Verifying the JAVA Argument for AIS Server (Oracle WebLogic Server Only)
If the AIS Server is deployed on Oracle WebLogic Server, you must make sure that the server configuration includes a JAVA argument for starting the server.
To do so:
In the WebLogic Admin Console, locate the AIS Server instance.
Click the Server Start tab.
Verify that the following argument is in the Arguments field:
-DuseSunHttpHandler=true
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